<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Document</title>
    <style>
      * {
        margin: 0;
        padding: 0;
        font: 30px / 90px "微软雅黑";
      }
      ul {
        list-style: none;
      }
      .wrap {
        width: 1000px;
        height: 1000px;
        position: absolute;
        left: 50%;
        top: 50%;
        margin-top: -500px;
        margin-left: -500px;
        background: url(img/bg.jpg) no-repeat;
      }
      .menu {
        width: 330px;
        border-radius: 10px;
        overflow: hidden;
        margin-top: 285px;
        margin-left: 335px;
        background: #f87a75;
        box-shadow: 0 20px 50px rgba(248, 122, 117, 0.5);
      }
      .title {
        height: 90px;
        padding-left: 112px;
        box-sizing: border-box;
        color: #fff;
        position: relative;
      }
      .title::after {
        content: "";
        position: absolute;
        right: 36px;
        top: 41px;
        background: url(img/ar.png) no-repeat;
        width: 28px;
        height: 16px;
      }
      .list {
        width: 316px;
        padding-left: 7px;
        padding-bottom: 5px;
        display: none;
      }
      .list li {
        height: 90px;
        margin-bottom: 2px;
        background: #fee4e3;
        border-radius: 20px;
        padding-left: 112px;
        box-sizing: border-box;
        background-position: 23px 24px;
        background-repeat: no-repeat;
      }
      .list li:hover {
        background-color: #fff;
        box-shadow: 0 0 50px rgba(248, 122, 117, 0.93);
        position: relative;
      }
      .list li:nth-of-type(1) {
        background-image: url(img/icon1.png);
      }
      .list li:nth-of-type(2) {
        background-image: url(img/icon2.png);
      }
      .list li:nth-of-type(3) {
        background-image: url(img/icon3.png);
      }
      .list li:nth-of-type(4) {
        background-image: url(img/icon4.png);
      }
      .list li:nth-of-type(5) {
        background-image: url(img/icon5.png);
      }
    </style>
  </head>
  <body>
    <div class="wrap">
      <div class="menu">
        <div class="title">菜单</div>
        <ul class="list">
          <li>微博</li>
          <li>图片</li>
          <li>博客</li>
          <li>视频</li>
          <li>更多>></li>
        </ul>
      </div>
    </div>
    <script>
      var titleEle = document.querySelector(".title");
      var listEle = document.querySelector(".list");
      var li_str = document.querySelectorAll("li");

      titleEle.onclick = function () {
        listEle.style.display = "block";
        Array.from(li_str).forEach(function (item, i, arr) {
          item.onclick = function () {
            titleEle.innerText = item.innerText;
            listEle.style.display = "none";
          };
        });
      };
    </script>
  </body>
</html>
